Ferdinand kramer



(Nb Model.) 7 2 Sheets--Sheet 1. F. KRAMER. DRIVING GEAR FOR MOTOR CARS.

No. 593,945. Patented Nov. 16,1897.

2 3s} lzTumtar (No Model.) 2 Sheets-Sheet 2. F. KRAMER.

DRIVING GEAR FOR MOTOR CARS. No. 593,945. Patented Nam 16, 1897.

. liventor UNITED STATES ATENT FFIcE.

FERDINAND KRAMER, OF COLOGNE, GERMANY, ASSIGNOR TO THE GAS-MOTOREN-FABRIK-DEUTZ, OF OOLOGNE-DEUTZ, GERMANY.

DRIVING-GEAR FOR MOTOR-CARS.

SPECIFICATION forming part of Letters Patent No. 593,945, dated November 16, 1897.

Application filed September 3, 1897. Serial No. 650,507. (No model.)

- a specification.

lhis invention relates to driving-gear for motor-cars which are driven by a motor-for example, a gas or petroleum motor which always runs in the same direction. In such motor-cars it has been heretofore necessary to use wheel-gear for reversing the motion,

the wheels of .which were put in gear either only for thebackward movement or partly for the forwardand partly for the backward movement; The present invention renders it possible to reverse the motion of the motorcar without this arrangement by the use, in addition to the necessary coupling of the usual parts, of only one pitch-wheelfih" one of the driving-shafts of, the car and of a chain guide pulley. A considerable saving of mechanism is thus achieved.

Figure 1 of the accompanying drawings shows the motor-car in elevation; Fig. 2, in vertical section on lines I I II II of Fig. 1.

On the driving-shaft a of the motor A is mounted a friction coupling B, which is worked by a hand-lever c. When the parts of this coupling are engaged, the coupling serves to connect the'pitch-wheel O to the shaft a, on which it is otherwise mounted loose. The pitch-wheel O is connected by an endlesschain with the two wheels D and E, which are mounted loose on the two running axles cl and e of the car in such a manner that these two wheels turn in opposite directions. The pulley J serves to guide the chain back to the drivingwheel O. There are also mounted on the running axles the clutchcouplings H H, (or friction-couplings,) which are actuated by the hand-levers h h and render itpossible to couple the axles with the loose wheels.

When the clutch-coupling II is engaged, the running axle d is coupled with and carried around by the pitch-wheel D, causing the car to travel forward, (to the left in Fig. 2.) On the other hand, if the coupling H be disengaged and the coupling H engaged the running axle 6 will be coupled to the pitch-wheel E, and as this rotates in the direction opposite to that of D the car will move backward, (to the right in Fig. 2.)

Since the endless chain between the driving-shaft a and a running axle d must necessarily be used in motor-cars, it is only necessary to add the pitch-wheel E with the guidepulley J and-the couplings H H in order to fit a motor-car with the improved reversing mechanism.

It is advantageous to so connect the levers h h that both couplings H II can never be engaged at the same time or to effect the alternate engagement of the two couplings by a single lever. These constructional variations are omitted from the drawings.

The driving-wheel B can be mounted on a I second shaft indirectly driven by the motor instead of on the motor-shaft.

Having thus described the nature of this invention and the best means I know for carrying the same into practical effect, I claim- In driving-gear for motor-cars, the combination with a motor, and a wheel 0 driven by said motor in one direction, of wheels D, E that are mounted loosely on the forward and rear car-axles, respectively, clutches H, H to make said wheels fast on the car-axles, means for operating said clutches alternately, a chain driven by the wheel 0 and engaged with the wheels D, E to drive them in contrary directions, and a pulley J to guide said chain, substantially as described.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, this 23d day of August, A. D. 1897.

FERDINAND KRAMER.

Witnesses:

WILLIAM H. MADDEN, CHRISTINE PFEIFFER. 

